Fire-brick compound.



106. COMPOSITIONS,

CO e To all whom it may concern:

ATING on Piisiic FIRE-BRICK com oulatnv r Cross Reference V 822, 6 UN ITED STATES PATENT OFFIQE THOMAS P. GOURLEY, OF NEW YoRK,.N. 5

. Specification or Letters Patent.

p ineum ie'oe'.

Examiner hpplication filed February 28,1906. Seria1No- 303,352.

Be it known that I, THOMAS P. Go RLEY,a

citizen of the United States, residing in the bprough of Brooklyn, city of New York, county of-Kings, State of- New York, have invented a new and useful Fire-Brick Compound, of which the following is a specifica tion.

This invention relates to a fire-brick compound for manufacturing'bricks, lining furnaces, crucibles, 'walls, and floors of buildmgs.

One of the principal objects of my invention is for manufacturing bricks Whichwill stand a greater heat and be lighter in weight than the fire-bricks now in use.

Said invention consists of powdered carhorundum or carbid of silicon, which is produced by melting sand and carbon together in an electric furnace. It is characterized by extreme hardness and is used for abrasive urposes as a substitute for emery and corunum. I mix with the carborundum sufiicient water to render thecom ound plastic and also sufficient silicate'of so am bind the carborundum; sulfuric acid in a diluted form being added to render the compound better adapted for its urpose.

In practice-l find that carborundum possesses in'itself binding qualities, but not of sufficient cohesiveness to render the compoundserviceable when the only other ingredient in the compound is water. A brick 'made from a compound 'of carborundum and water when subjected to the action of heat becomes hard only'on the outside surface. The inside does not a'dhere'sufficient to-allow the brick to stand a sufficient strain to render the brick practical, Where in my compound the addition of silicate of soda serves to bond the carborundum firmly together and the sulfuric acid serves as ,a flux for the silicate of soda and aids in more thoroughly amalgamating the ingredients of the compound.

The present invention consists of a comound which can also be supplied in liq'uid generated for smelting of ores and metals are much below its fusing-point.

A compound made up'mto a paste 1n .ac

of one per cent.

cordance with my invention can be supplied by means of a brush oriotherwise to the V bricks which are intended-Ito be used for.

building a furnace or those bricks. can be im-.

mersed in .the viscid liquid for about five hours, and if a coating of about one-sixteenth of an inch of the compound is applied v tethebricks it will tack of the 'ghest temperature which -is protect the bricks from the at-- ever produced by combustion methods ordinary work. i In the practice of my'inventionl' use the following ingredients combined in about the proportions stated namely, carborundum, eighty er cent: silicate of soda, sixteen and one-haf per cent.; water fEfee and onequarter per cent. ul'rl'iric acid 'one' uarter The sulffiric acid is iluted to the following proportions.na'mely, sulfuric acid, twenty-five per cent.) water, seventy-five per cent. These ingredients when thorou hly mixed-are then in a condition to I be molded intoany form desired. 1 v

In the manufacture of bricks from my mol and ressed into the sha' e-and size of the brick require Then the 'rick is placed in an oven which is heated to a temperature 'of about 100 Fahrenheit for about thirty Then raise the tem eratureup to 1.

minutes. about 200 Fahrenheit for t irty minutes. The brick is then in a condition to behandled 'without breaking or disintegratin The brick is now taken from the oven ant? placed :com ound .the compound is placed in the in a furnace which is heatedv to a temperature -of 1,000 Fahrenheit 'andit remains in the furnac e abbhtlt ifid'hours; when .it is taken out, allowed to cool off, and-is then readyfor use and shipment.

is linin furnaces and Cupolas. The operation of lining .a furnace is as follows; The

'compound being in a plastic state, I insert tween the patern and the casing of the fur- IOO nace or'cupola. henthe'required'thickness. and 4 height is attained, the attern is withdrawn a id a fire is started an kept at a temperature f about 200 Fahrenheit until all the watei has evaporated from the compound. The temperature is then raised to A new and valuable use for my compound about 1,000 Fahrenheit and kept at that temperature until the compound is red-hot. As soon as the compound becomes red-hot the furnace or cupola is readyfor use. When a furnace or cupola is to be lined with brick made in accordance with my invention, the compound in its plastic state isused for cementing the bricks together when the bricks are being laid in tiers in the furnace. After the furnace or cupola has been lined with bricks made from mycompound and they have been cemented together with the compound in its plastic state a fire is started in the furnace or on ola at a temperature of about 200 Fahren eit and kept at that temperature for about thirty minutes. Then the temperature is raised to about l,-000 Fahrenheit, when the whole lining becomes one solid mass of tough and hardfire-brick.

My compound is not only useful for making bricks, crucibles,linin furnaces and cupolas, but also for use in msiliing fireproof floors in the large ofliceebuildings and other structures. Laws regarding the construction 01 buildings in the large cities require all structures above a stated height to be built fireproofthat is to say, they must be constructed with walls of brick, stone, or iron, and the floors and partitions must be made of fireproof fire-brick. The fire-brick in use at the present time is very heavy, and it is necessary to have much larger and, stronger girders and beams to stand the great weight of the fire-brick in the floors and partitions. The fire-brick made from my compound is lighter in weight and stronger than the brick fire-brick in present use and will stand a greater heat Without any. material expansion or contraction. 4

-Having thus described my invention, I claim' 1. A fire-brick compoundv comprising carbiddof silicon, Water, silicate of soda and an aci 2. A fire-brick compound comprising carbid of silicon, mixed with water, silicate of soda, and sulfuric acid.

3. 'A fire-brick compound comprising carborun'dum,water, silicate of soda and an acid.

4. A fire-brick compound comprising carborundum, silicate of soda for bonding the particles of the carborundum together an acid which serves as' a flux for said silicate of soda,'and water for making the compound plastic. 1

5. A fire-brick, compound comprising carborundum, silicate of soda, water and a flux.

6. A fire-brick compound comprisin carborundum, silicate of soda, water an sul furic acid which serves as a flux for said silicate of soda. 1

7. A fire-brick compound comprising car- :borundum mixed with silicate of soda about the proportions of eighty percent. of carborundum, sixteen and one-half per cent. of silicate of soda, a flux and sufiicient water to render the compound plastic.

8. A fire-brick compound comprising carbid of silicon and silicate of soda mixed with sufficient water to render the mixture plastf and with sufficient sulfuric acid to serve as 7 flux for said silicate of soda.

- 9. A fire-brick compound comprising carborundum, sulfuric acid, water and a bond.

10. A fire-brick compound comprisin carborundum, silicate of soda, Water an sulfuric acid in the following proportions by weight, namely: about eighty pounds of carborundum, about sixteen and one-halfpounds of silicate of soda, about three and one-half pounds of water and one-quarter pound of sulfuric acid.

Y 11. A fire-brick compound comprising carbid of silicon, mixed with Water, sulfuric acid and a bond.

12. A fire-brick compound comprising carborundum, a fiuxing acid, sufficient water to render the compound plastic, and a bond.

- 13. A fire-brick compound comprising carbid of silicon mixed with silicate of soda, a fiuxing acid which serves to flux said silicate of soda, and sufficient water to render the mixture plastic, said compound being bonded in asolid mass when subjected to the action of heat.

14. A fire-brick compound comprising carborundum, silicate of soda which serves as a bond, sulfuric acid or its equivalent, which serves as a flux for said silicate of soda, and

water which renders the mixture plastic.

. THOMAS P. GOURLEY.

Witnessesz- ABRAHAM ARUPOLSS, HELEN ZURICH. 

